Monday, July 12, 2004

Security of Y-00 and similar quantum cryptographic protocols

Authors: Horace P. Yuen, Prem Kumar and Eric Corndorf
Comments: Submitted to Physics Letters A, July 2004
\It is claimed in Phys. Lett. A by T. Nishioka et. al.
327 (2004) 28-32, that the security of Y-00 is equivalent
to that of a classical stream cipher. In this paper it is
shown that the claim is false. The erroneous assertions made
in that paper are delineated. The security of Y-00 type
protocols in both key generation and direct encryption
are clarified.
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